diff --git a/CMakeLists.txt b/CMakeLists.txt
index f22bba1fb..b5eb12535 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,7 +129,7 @@ IF(CMAKE_COMPILER_IS_GNUCXX OR MINGW)
 
     # GCC specific Compiler Options
     ELSE()
-        ADD_DEFINITIONS("-std=gnu++11 -frounding-math -fsignaling-nans")
+        ADD_DEFINITIONS("-frounding-math -fsignaling-nans")
 
 #                IF(NOT MINGW)
 #                        set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -rdynamic")
diff --git a/source/glest_game/CMakeLists.txt b/source/glest_game/CMakeLists.txt
index baa40b1d4..b4b2d343b 100644
--- a/source/glest_game/CMakeLists.txt
+++ b/source/glest_game/CMakeLists.txt
@@ -8,7 +8,7 @@ SET(TARGET_NAME_MANPAGE "${TARGET_NAME}.6")
 IF(BUILD_ZETAGLEST)
 	MESSAGE(STATUS "Will try to build ZetaGlest game")
 
-	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=gnu++11")
 
 	IF(WIN32)
 		SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}